Like this:

jailbird Bert Chisholm,
life-sentenced to prison,
turned to poetry as a form of escape
and threw the rhyme-book out of the window
by stringing words together
l
i
k
ek
n
o
t
t
e
db
e
d
s
h
e
e
t
s
down which to descend
(for poetry was an activity
to put an end to captivity)